Cooling device for explosive-engines.



No. 734.356. PATENTED ULY 21, 1903;

M. O'PFBNBAGHER. 000mm DEVICE FOR BXPLOSI-VE ENGINES.

APPLIOATIOU FILED D110. 80'. 1902.

30 MODEL.

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UNITED STATES Patented July 21, 1903.

PATENT OFFICE.

MARTIN OFFENBAOHER, OF FURTH, GERMANY, ASSIGNOR TO THE FIRM OFVEREINIGTE MASCHINENFABRIK AUGSBURG UND MASOHINENBAU- GESELLSCHAFT NIIRNBERG A. G.,

OF NUREMBERG, GERMANY.

COOLING "DEVICE FOR EXPLOSlVE-ENGINES.

SPECIFICATION forming part of Letters Patent No. 734,356, dated July 21,1903. Application filed December 30, 1902. Serial No. 137,197. (Nomodel.)

siding at Fiirth, in the Empire of Germany,

(whose full postal address is Maxstrasse 8, Fiirth, aforesaid,) haveinvented a certain new and useful Cooling Device for Explosive- Engines,of which the following is a specification.

The present invention has for its object an easy and rapid method'ofemptying the water-pipes and water-cooling chambers ofcombustion-engines.

The improved means consists in closing the inflow-pipe to the reservoiror water-supply pipes and connecting it instead with the water-dischargepipe, by which means any water standing in the cooling-chambers of theengine and of the series of pipes is forced by means of air-pressureinto the inflow-pipe in a direction opposite to that in which the waterflows when the engine is at work in order to expel the water through thedischarge-pipe, which is placed in communication withthe inlet-pipe.

The invention is shown diagrammatically in one form of construction inthe accompanying drawing as applied to a combustionengine.

Both the working cylinders a of the combustion-engine and the pistons 17of the same are provided with internal watercooling chambers c and d Thecooling-water flows in through an admission-pipe u and a connecting-pipe6 into the cooling-chambers c of the working cylinder and also through aconnecting-pipe f and a telescopic pipe g it into the cooling-chamber dof the working piston. From the cooling-chambers o and d the water flowsthrough a connecting-pipe v1 and a telescopic pipe is Z into the commondischargevessel is connected an air-pipe 5', provided with a-closabletap t. This air-pipe is connected with a blast or like device forproducing compressed air at a higher or lower pressure. Thus if the tapt be opened, the cook 10 closed, and the water-supply pipe 10 shut oiffrom the farther part of the water-supply pipe by the closing of; thetap 0, and placed instead in communication with the dischargepipe n byopening the cock q, the compressed or blast air flowing through the pipe8 into the chamber r penetrates into the series of pipes, expelling thewater standing in the cooling-chambers of the engine in the oppositedirection to that in which the water flows during the working of theengine-that is to say, from the said chambers into the inflowpipe u,from which it escapes through the discharge-pipe n.

I declare that what I claim is- In combination with an engine having awater-jacket, Water-circulating pipes therefor, a compressed-air pipeconnected with the circulating-pipes and valves in saidcirculating-pipes whereby Water may flow into the jacket or be forcedtherefrom, substaptially as described.

In witness whereof I have hereunto set my hand in presence of twoWitnesses.

MARTIN OFFENBAOI-IER.

Witnesses WILHELM HiiNN, OSCAR Book.

